Acer Extensa 650 Maintenance Manual

							                                                                                                                         Installation  2-11  
2.7  Installing the AC Power Adapter
Use the following procedures to connect the AC adapter to the system:
Caution: Use only the AC adapter supplied with the computer; other 
adapters can damage the unit.
1.  Remove the AC adapter from the packaging. Connect the round coaxial 
connector supplied with the notebook to the DC IN power receptacle on the 
left rear of the notebook as shown in Figure 2-8.
2.     Connect the female side of the AC power cord to the AC adapter and connect 
the male end to a grounded AC outlet.
. 
Figure 2-12 - Installing the AC Adapter  
2.8  Initial System Checkout
After youve installed all internal options and external cabling, youre ready for system 
checkout and software configuration.
To check out the system, press the power button on the left side of the notebook which 
initiates self test. During self test execution, the computer checks the operation of all 
key hardware including memory and CPU (and displays copyright and version number 
data during test execution).
Upon successful conclusion of self test, the computer automatically loads its operating 
system and windows environment. If self test fails to complete and an error message is 
displayed, try powering down the computer for a couple of minutes and turning power 
AC AdapterAC Power 
(120VAC to 230 VAC,
50 to 60 Hz)
DC-IN 
						

							2-12   Installation
back on to repeat self test. If the error message persists, refer to Section 5 for 
troubleshooting information.
2.9  Making Backups of System Software
Immediately after completion of the installation procedures, make backups of all 
software. In the event of a disk problem, restore the system using the System Files 
Recovery disk and the set of backup disks.
Note:  Refer to the Extensa  Series Notebook Computer User’s Guide for 
additional information. 
						

							                                                                                                    Operating Instructions  3-1
3
Operating Instructions
3.1 Introduction
This section contains a summary of notebook operating procedures useful for 
maintenance operations. For additional detail, refer to the Extensa Series Notebook 
Computer User’s Guide supplied with the notebook.
3.2 Controls/Indicators
The operating controls and indicators for the 60x and 65x Series Notebooks are 
identical (refer to Figure 3-1). A brief description of the controls and indicators is 
provided in the following paragraphs.
 
Figure 3-1  60x/65x Operating Controls and Indicators
Num
Lock
LED
Caps
Lock
LED Battery
Charging
LED Disk Media
LED
Power ButtonStandby Mode
Indicator Power/Battery Lo
w
Indicator 
						

							3-2   Operating Instructions 
3.2.1 Power On/Off Switch
The notebook contains an alternate action power button located on the right side of 
the notebook as shown in Figure 3-1.  On the first button depression, power is turned 
on to the notebook. On the second depression, power is turned off.
3.2.2 Notebook LEDs
The notebook contains four front indicator LEDs and two right side LEDs as shown 
in Figure 3-1 and described in Table 3-1.
Table 3-1  60x/65x Series Indicators
3.2.2.1 Hot Key Sequences
Table 3-2 contains a summary of hot key sequences useful when performing 
maintenance operations.
IconIndicator LightDescription
Power/ Battery-low Indicator Lights when the system is on and there is power to the system.
Flashes when the battery power is low.  Connect a powered AC
adapter to the computer as soon as possible.
Standby Mode Indicator Lights when the computer is in Standby mode.  Flashes when the
computer is in 5V Suspend mode.
The computer enters Standby mode if the Standby hot key
(Fn+F4) is pressed or the 
STANDBY TIMEOUT parameter in
Setup is enabled and expires.
The computer enters 5V Suspend mode when you press the 5V
Suspend hot key (Fn+F3), 
the 5 VOLT SUSPEND
TIMEOUT
 parameter in Setup is enabled and expires, or the
display is closed.
Disk Media Indicator Lights when the computer writes to or reads from the hard disk
drive, or reads from the CD-ROM drive.
Battery Charging Indicator Lights when a powered AC adapter connected to the computer is
charging the battery.
Flashes when there is a problem with the battery or the battery is
not recognized by the smart charger.
Turns off when there is no battery or the battery is fully charged.
Caps Lock Indicator Lights when the caps lock function is toggled ON using the Caps
Lock key.
Num Lock Indicator Lights when the embedded numeric keypad is toggled ON using
the Num Lock hot key (Fn+F7). 
						

							3-3   Operating Instructions 
Table 3-2  Summary of Notebook Hot Key Sequences
Function Key Sequence
Increase LCD screen brightness Fn-Up Arrow
Decrease LCD screen brightnessFn-Down Arrow
Lighten LCD screen contrastFn-Right Arrow
Darken the LCD screen contrastFn-Left Arrow
Alternate between display modes (LCD, Ext.l CRT or both)Fn-F12
Enter 0V Suspend ModeFn-F2
Exit 0V Suspend ModePress Power Button
Enter Standby ModeFn-F4
Resume from Standby ModePress any key 
Toggle speaker output on/offFn-End
Numeric Lock Fn-F7
Turn off the LCD backlightFn-F11
Turn on the LCD backlightPress any key
Stop a command or applicationCtrl-Pause
Resume a command or applicationPress any key
Send the contents of the screen to the printerShift-PrtSc
Sets the notebook to echo keystrokes to the printer; prints a 
line when you press Enter; continues until you press Ctrl-P Ctrl-P
Enable/disable the internal keypadFn-T
Toggle Scroll Lock function on/offFn-F6
Bring up the setup screen anytimeFn-F1
Warm bootCtrl-Alt-Del
StartWindows logo key
Activate next taskbar buttonWindows logo key-Tab
Explore the computer Windows logo key-E
Minimize allWindows logo key-M
Display run dialog boxWindows logo key-R
Display the application’s context menuApplication key 
						

							                                                                                                              Theory of Operation  4-1  
4
Theory of Operation
4.1 Introduction
This section contains a general block diagram theory of operation description of the 
Extensa 60x/65x Series Notebook Computers.
Note: Various internal components may change on future models and busses/
bus speeds are subject to change.
4.2 Notebook Functional Overview
The Extensa 60x/65x Series Notebooks consist of eight major functions or sections 
including:
¨System Processor - implemented on the Motherboard Assembly
¨Memory Subsystem - implemented on the Motherboard Assembly
¨Processor/Memory/I/O Control - implemented on the Motherboard 
Assembly
¨Keyboard Subsystem - implemented on the Motherboard and the Keyboard 
Assemblies
¨Video Subsystem - implemented on the Top Board and on the LCD Display 
Assembly
¨Sound Subsystem - implemented on the Motherboard Assembly.
¨Touchpad Mouse Subsystem- implemented on the Touchpad assembly and 
on the Motherboard Assembly
¨Hard Disk Drive Subsystem - implemented on the Motherboard Assembly 
and the Hard Disk Drive Assembly
¨Floppy Disk Drive Subsystem - implemented on the Motherboard and Floppy 
Disk Drive Assembly
¨Power Subsystem - implemented on the Power Supply Board, Inverter Board, 
battery packs, and AC adapter 
						

							4-2   Theory of Operation
Figure 4-1  Extensa Functional Block Diagram
4.2.1 System Processor
The System Processor function for the notebook is implemented on the Motherboard  
in the form of an Intel Pentium P54-C Superscalar 586 Processor Chip. The processor 
operates in conjunction with RAM and ROM Memory and other control logic  to process 
software instructions (BIOS, DOS, Windows, and applications).  The processor 
communicates with the hard disk drive and the memory components using high speed 
busses.
The Processor also interacts with other hardware logic to provide the power savings 
features for the notebook. These features include controlling CPU clock speeds, 
reducing clock speeds whenever possible (e.g. when performing floppy disk drive 
accesses), powering down unused devices, etc.
586
M1521
BGA
DRAM
HDD
M1523
IDE Master
USB connectorcontrollerGraphicUMA SRAM
CPU Bus
ISA Bus
CD
PCI Bus
CPU 
						

							                                                                                                              Theory of Operation  4-3  
4.2.2 Memory Subsystem
The memory subsystem comprises the following components:
¨Main memory
¨L2 Secondary Memory (cache)
¨Flash ROM
The Extensa Series uses fast Extended Data Out (EDO) DRAM for main and video 
memory and high-speed synchronous, pipelined burst SRAM  for L2 cache memory. 
Main BIOS and Video BIOS are stored in Flash ROM.
4.2.2.1 Main Memory
The standard 60x Series notebook comes with 8 MB of Main memory installed on the 
attached soDIMM. Memory expansion accommodations are provided via a standard 
soDIMM connector on the bottom of the Motherboard Assembly.
The 65x Series Notebooks come standard with 16 MB main memory, expandable to 
80 MB.
4.2.2.2 Flash ROM
All versions of the Extensa notebook family use a Flash ROM that contains both the 
main system BIOS and the VGA BIOS.  The Flash ROM contains Boot Block logic that 
allows downloading new versions of BIOS without destroying the Boot Load area.
The Flash ROM execution is 8 bits wide. However, better performance can be attained 
by enabling the Shadow ROM in the CMOS setup routine or by selecting the Windows 
Control Panel Applet. When the Shadow ROM is enabled, BIOS is copied into 32-bit 
high speed system.
4.2.3 Video Subsystem
The video subsystem is implemented on the VGA Video Board and on the Motherboard 
Assemblies.
The notebook contains a built-in 10.4 inch (or larger) LCD and features simultaneous 
LCD and external VGA display.
The video subsystem includes a 1 MB (60x Series) or 2 MB (65x Series)  DRAM memory, 
32-bit DRAM bus, and separate display and memory clocks. An additional frame buffer/
accelerator DRAM increases the available memory band width for CPU accesses. The  
						

							4-4   Theory of Operation
video section also uses additional levels of write FIFOs, a read cache, page mode DRAM.
4.2.4   Sound Subsystem
The Extensa  Series Notebook is equipped with a sound chip set that is Sound BlasterTM 
and Sound Blaster Pro  compatible.  Internal stereo speakers provide the Notebook with  
sound generation capabilities. A set of 3.5 mm connectors allow for external microphone 
and line inputs and headphone/speaker outputs.
The sound subsystem also includes a variety of  sound utilities that combine to provide 
additional multi-media functions:
4.2.5 Keyboard Subsystem
The keyboard subsystem, implemented on the Keyboard Assembly and the Motherboard 
Assemblies Board, consists of the following major sections:
¨Keyboard Assembly
¨Keyboard Scanner
¨Status LED Interface
4.2.6 Hard Disk Drive Subsystem
The Hard Disk Drive Subsystem, implemented on the Motherboard Board and on the 
associated hard disk drive module(s), provides disk storage for all system software and 
user files.
The notebook is equipped with an  810 MB or larger hard disk drive. The hard disk 
drive also features built-in power conservation features configured from the standard 
CMOS Setup Routine. An Automatic Power Down mode can be selected which powers 
down the drive motor during periods of inactivity. An additional level of power 
conservation may also be selected which powers down the motor plus all control circuits.
The hard disk drives are factory formatted as a single drive (Drive C:) and are preloaded 
with installation versions of Windows 95 or Windows for Workgroups (in dual load 
versions, the user selects operating system during software installation).
4.2.6.1 Hard Disk Drive Power Management
Both the internal hard disk drive and the hard disk drive installed in the media bay